
"Logitech Wireless Solar Keyboard K760" (in German).

There are two models, compatible with Windows or Macintosh operating systems. It is a full-sized keyboard, including the usual movement keys and NumPad section on the right side, with low-profile keys much like a laptop. The Logitech K750 has a set of photovoltaic cells on the top edge, charges from any light source including sunlight and under a standard bulb, can work up to three months in total darkness, and includes software to display battery charging status.

In 2018 Microsoft filed a patent describing how solar panels could be used to extend battery life for Microsoft's Surface Pro. The first keyboard that was solar-powered was Logitech K750 that was announced by the company in 2010. A photovoltaic keyboard is a wireless computer keyboard that charges its batteries from a light source such as the sun or interior lighting, addressing a major drawback of wireless computer peripherals that otherwise require regular replacement of discharged batteries.
